Research

Weak Lensing Without Shape Noise

Date:2024-02-26

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Title:Weak Lensing Without Shape Noise

Time:Wednesday, February 28, 2024, 4:00pm

Speaker:Jiachuan Xu 徐家川 (Arizona)

Address:S727

主讲人 Jiachuan Xu 徐家川 (Arizona) 时间 Wednesday, February 28, 2024, 4:00pm
地点 S727 报告语言
办公室

Weak gravitational lensing imprints a coherent distortion onto the observed shapes of distant galaxies. At the image level, this gravitational shear degenerates with the intrinsic shape of galaxies, and the weak lensing signal-to-noise from an individual galaxy is of order 0.01. I will describe Kinematic Lensing, a new technique combining imaging and galaxy kinematics to measure weak lensing with signal-to-noise of order one per galaxy.


BIO

I obtained a bachelor’s degree from Tsinghua University in 2018. Then I joined the PhD program at the University of Arizona in 2019 to work on weak lensing and multi-probe cosmology. My research interests are developing a new weak lensing technique, Kinematic Lensing, and constraining cosmology and baryonic feedback in our Universe through multi-probe analyses.


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